My wife and I will be attending a wedding near Lake Bled in July. We have flights into and out of Vienna. In total the trip will last 6 nights. We are deciding between taking trains or to rent a car. We have each been to Vienna before, we love the city, but would prefer to spend most of our time seeing other parts of Austria or Slovenia. We are interested in doing some light hiking on the trip as well, all during the day (not camping, just taking trails for a few hours where possible). Along the way Graz and Maribor look to be fine places to spend a night coming or going to Slovenia.
I welcome any thoughts about mode of transport for the week, itinerary, or any suggestions for short hikes in the region.